From 1e9e06a325160a7b8707f2a8b828886fd1543afb Mon Sep 17 00:00:00 2001
From: fabrixxm <fabrix.xm@gmail.com>
Date: Sat, 17 Nov 2018 16:12:45 +0100
Subject: [PATCH] Use appropriate redirect in dfrn_poll

Got an error while remote auth to a local user, where $destination_url
is relative.
---
 mod/dfrn_poll.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mod/dfrn_poll.php b/mod/dfrn_poll.php
index 9cd110917..ecca0adf7 100644
--- a/mod/dfrn_poll.php
+++ b/mod/dfrn_poll.php
@@ -562,7 +562,11 @@ function dfrn_poll_content(App $a)
 					break;
 				default:
 					$appendix = (strstr($destination_url, '?') ? '&f=&redir=1' : '?f=&redir=1');
-					System::externalRedirect($destination_url . $appendix);
+					if (filter_var($url, FILTER_VALIDATE_URL)) {
+						System::externalRedirect($destination_url . $appendix);
+					} else {
+						$a->internalRedirect($destination_url . $appendix);
+					}
 					break;
 			}
 			// NOTREACHED